14-Team Science: Collaboration in R&D (S1E14)

Welcome to the Deep Dive. Today, we're going
to be stepping into the world of pharmaceutical
research and development, bringing a new medicine
to market. You know, it really takes a whole
team. Yeah. And you've shared your interest in
just how collaborative this process really is.
It really is fascinating. Yeah, we're going to
kind of go behind the scenes and really figure
out how intricate that teamwork is. Yeah, it's
not just about having experts in each field,
it's about how all of the experts actually work
together. They're constantly sharing information
and adjusting their approach as they go. So it's
very dynamic. That makes a lot of sense. Our
sources for this deep dive include a book about
pharmaceutical product development, and I was
surprised to learn that it takes 10 to 15 years
to develop a new drug. Wow. And it costs hundreds
of millions of dollars. Oh, yeah, it's a huge
endeavor. So with all of that time and money
on the line, I can definitely see why teamwork
is so important. It really is. Think of it like
an orchestra where each instrument has its own
unique sound and role to play. And you need all
the instruments, the strings, the brass, the
percussion, all working together to create this
beautiful symphony. And in drug development,
our instruments are the chemists, the biologists,
formulation scientists, the clinical researchers,
the regulatory experts. The list goes on. OK,
so let's break down this orchestra. Where do
we even begin with such a complex process? Well,
the first movement usually starts with the chemists
and biologists. They're kind of like our composers,
in a way. So the chemists, they're the ones discovering
and synthesizing new drug compounds, the potential
notes of our symphony. But just a single note
doesn't make music, right? Yeah. We need to understand
how those notes fit into a larger melody. That's
where biologists come in, studying how those
compounds interact with the body at a molecular
level. Okay, so we have our composers creating
those notes. What happens next? That's where
the arrangers step in. And in the world of drug
development, those are our formulation scientists.
They take these promising chemical compounds
and figure out how to turn them into a safe and
effective medicine that patients can actually
take. This is where we start thinking about things
like tablets, capsules, injections, or even creams.
So it sounds like there's a lot more to it than
just stuffing a chemical into a pill and calling
it a day, right? You're absolutely right. It's
a common misconception that formulation is really
simple. But these scientists are essentially
drug delivery architects. They have to consider
a whole range of factors. How the drug dissolves,
how it's absorbed by the body, its stability,
the best way to deliver it. It's a very complex
process. Speaking of dissolving and absorbing,
one of our sources used a great analogy to explain
that process. And they described it as being
like watching a sugar cube dissolve in water.
That's a great way to visualize it. But on a
microscopic level. Yeah. For a drug to be absorbed
into the bloodstream, it first needs to dissolve
in the fluids of the stomach and the intestines.
Right. And even something seemingly as minor
as the size of the drug particles can have a
huge impact on how quickly it dissolves and is
absorbed. That's amazing. So how do they control
the size of those particles? Oh, there are some
really clever techniques like micronization,
where they use specialized equipment to grind
the drug particles down into a very fine powder.
Oh, wow. And then there's nanonization. which
takes things a step further, creating particles
that are incredibly tiny. We're talking on the
nanoscale. That's incredible. It sounds like
formulation science is a truly specialized field.
It really is. They're like the unsung heroes
of drug development. They're the ones ensuring
that this promising compound actually reaches
patients in a form that can actually help them.
Yeah, it's so important. So we've got our composers,
we've got our arrangers. What comes after that?
Well, once we have a well -formulated drug product,
it's time to move from the rehearsal room to
the concert hall, so to speak. And that means
entering the realm of clinical trials. This is
where our clinical trial specialists come in,
and they're kind of like the conductors. They're
bringing together thousands of patients and coordinating
this very meticulous process of testing the drug's
safety and effectiveness in humans. Wow. It's
incredible to think about the scale of those
trials and the responsibility involved. It is.
It's a critical stage and requires immense precision
and coordination. You know, they need to design
the study carefully, recruit and retain those
participants, collect and analyze data with the
utmost rigor, all while ensuring the safety and
well -being of everybody involved. Right. It's
a complex symphony of its own. It really is.
And finally, once the performance is over, we
need someone to critique it. Exactly. That's
where our regulatory experts come in. Yeah. They're
kind of like the reviewers, you could say. They
work with government agencies like the FDA to
make sure that the drug meets all of the necessary
standards for safety, efficacy, and quality before
it can be available to the public. So it really
is a long journey from those initial notes in
the lab to the final performance on the pharmacy
shelves. It is, and it's important to remember
that throughout that entire process, communication
and collaboration is key. These teams aren't
working in silos. They're constantly sharing
data. They're sharing insights. They're sharing
challenges. They're refining the drug and its
formulation along the way. It's truly this dynamic
dance of expertise, and it highlights just how
essential team science is to the success of drug
development. I'm already seeing how that team
aspect is crucial here. It's not just one person
or even one discipline that brings a new medicine
to life. No. It's the combined efforts of all
these different experts working together toward
a common goal. Exactly. And that's what makes
it so fascinating. It's a testament to human
ingenuity and our drive to improve health and
well -being. I love that. We've only just begun
to scratch the surface of this process, and I'm
already feeling the depth of the collaboration
involved. But let's keep unpacking this further,
shall we? Absolutely. And speaking of teamwork,
you know, even the regulatory process involves
a lot of back and forth between drug developers
and agencies like the FDA. It's not just a one
way street. I guess that makes sense. I mean,
the FDA's job is to protect public health. So
they need to be really sure that any new drug
is both safe and effective. Exactly. And that's
where things like the biopharmaceutical classification
system or the BCS comes into play. OK. that can
help streamline the approval process for certain
drugs. OK, I've heard of the BCS, but I got to
be honest, I'm a little fuzzy on the details.
Oh, sure. Could you refresh my memory? Yeah,
think of the BCS as a way of categorizing drugs
based on how well they dissolve in the body and
how easily they're absorbed. So it's like sorting
drugs into different buckets based on their absorption
characteristics. You got it. There are four main
buckets or categories in the BCS. The first category,
case one, is like the ideal scenario. OK. high
solubility and high permeability. These drugs
dissolve easily and are readily absorbed. Sounds
like a dream come true for drug developers. It
certainly makes things a lot smoother. You know,
drugs in this category often don't require very
complex formulations to enhance absorption, which
can save a lot of time and money during development.
I bet. What about the other categories? Are they
more challenging? They can be, yeah. Case two
drugs, for example, have low solubility but high
permeability. OK. So they can be absorbed easily,
but they kind of struggle to dissolve in the
first place. So it's like having a key that fits
the lock perfectly, but you can't quite get it
out of your pocket. That's a great analogy. And
in these cases, the formulation scientists, they
have to get creative. They have to come up with
strategies to enhance the drug solubility. Right.
We talked about techniques like micronization
and nanonization earlier. Those are often used
for case two drugs. It's like giving the drug
that little boost to help it dissolve and get
into the bloodstream. Exactly. Okay. What about
the other two categories? Case three drugs are
kind of the opposite of case two. They dissolve
easily, but have trouble crossing biological
barriers to get absorbed. And then there's case
four, the most challenging category. These drugs
have both low solubility and low permeability.
That sounds like a double whammy for those drug
developers. It definitely presents some hurdles.
But even with those challenges, scientists are
finding innovative ways to improve the absorption
of those drugs. It's amazing to see the level
of ingenuity and persistence involved in this
process. It really is. And you know, the BCS
isn't just this theoretical framework. practical
implications for drug regulation as well. Oh,
how so? Well, for drugs that fall into that dream
team category, case one, with high solubility
and high permeability, the FDA sometimes grants
something called a bio waiver. The bio waiver,
what's that? It essentially means that the drug
developers don't have to conduct extensive clinical
trials to prove that a generic version of the
drug is equivalent to the brand name version.
So it's like a shortcut to getting a generic
drug on the market. You could think of it that
way. But it's not a free pass. Drugs have to
meet very strict criteria to qualify for a bio
-waver. They need to be highly soluble, highly
permeable, and rapidly dissolving. Plus, they
need to have a wide therapeutic window, meaning
there's a big difference between the effective
dose and the dose that might cause harmful side
effects. That makes sense. The FDA wants to be
absolutely sure that the generic version will
behave similarly to the brand -name drug before
giving it the green light. Absolutely. And that's
just one example of how the BCS influences the
regulatory landscape. It's a really valuable
tool for both drug developers and regulatory
agencies, helping to streamline the approval
process while maintaining those high standards
for safety and efficacy. It's fascinating to
see how scientific understanding translates into
real -world applications like that. It really
highlights the impact of team science. You know,
the BCS wouldn't exist without the collaboration
of all these researchers, regulators, industry
experts, all working together to ensure that
patients have access to safe and effective medications.
Speaking of access to medication, one of our
sources mentioned this concept of the maximum
absorbable dose or MAD. What exactly is that?
The MAD is essentially the theoretical upper
limit on how much of a drug can actually be absorbed
by the body. And it's based on factors like its
solubility and permeability. So it's like a ceiling
on how much of the drug can actually. get into
the bloodstream. Exactly. It's like a theoretical
maximum capacity for absorption. Knowing the
MAD is really important during drug development,
especially in the early stages. OK. If the projected
dose of a drug is way above its MAD, it's a red
flag that absorption could be a major challenge.
So it's like a reality check for those drug developers,
helping them prioritize compounds that are more
likely to be successful. Precisely. And it emphasizes
that interconnectedness of solubility, permeability,
and dose. Yeah. You could have a drug with fantastic
permeability, but if its solubility is really
poor, its MAD might be surprisingly low. So it's
a delicate balancing act. And the MAD helps to
quantify those trade -offs. I imagine this is
where those mathematical models you mentioned
earlier come into play. You're right. Mathematical
models are incredibly valuable tools for understanding
and predicting drug absorption. Imagine being
able to create a virtual version of the gastrointestinal
tract, complete with all the fluids, the enzymes,
and even those microscopic drug particles we
talked about. Wow. It's like a computer game
for drug developers. In a way, it is. These models
use mathematical equations to describe these
very complex physical and chemical processes
involved in drug absorption. By plugging in specific
values for things like solubility, particle size,
permeability, scientists can actually simulate
how a drug might behave in the body. So it's
like a virtual laboratory where they can test
out different scenarios and tweak those various
parameters. Exactly. They can explore what -if
questions. What if we reduce the particle size?
What if we change the formulation? These models
can help them predict how those changes might
impact the drug's absorption and its overall
journey through the body. It sounds incredibly
powerful. So they're essentially using math to
predict the fate of a drug in the human body.
Precisely. And these models aren't just these
static creations. They're constantly being refined
and validated using real world data from laboratory
experiments. And this iterative process ensures
that those models become more and more accurate
and predictive over time. It's amazing how technology
is being used to enhance our understanding of
such complex biological processes. It's like
having a crystal ball. that can peer into the
future of a drug's journey through the body.
It really is. And these models don't just focus
on absorption. They can also help predict a drug's
distribution throughout the body, its metabolism,
and its eventual elimination. It's like having
a GPS tracker for the drug, allowing scientists
to follow its every move. This level of insight
must be incredibly valuable for making informed
decisions about dosage, frequency of administration,
and potential drug interactions. Absolutely.
It allows scientists to really fine -tune that
drug's therapeutic benefits, while minimizing
minimizing the risk of unwanted side effects.
And I bet this kind of modeling also helps with
the regulatory process, giving the FDA more confidence
in the safety and efficacy of these new drugs.
You're exactly right. Regulatory agencies are
increasingly using mathematical models to evaluate
new drug applications, which adds another layer
of rigor to the approval process. It's fascinating
to see how all these pieces fit together. The
science, the technology, the collaboration, and
the regulatory oversight. It's a complex ecosystem,
and it highlights the importance of teamwork
and communication throughout that entire drug
development journey. We've talked a lot about
solubility and permeability. But our sources
also mention these intriguing proteins called
transporters. Yes. Which seem to play a crucial
role in drug absorption as well. Ah, yes. Transporters.
They're fascinating. You see, drug absorption
isn't just about molecules passively diffusing
across membranes. Okay. Transporters act like
gatekeepers. Okay. Actively controlling the movement
of drugs into and out of cells. So they're like
tiny bouncers at the cell's entrance deciding
who gets in and who gets turned away. I love
that analogy. Yeah. And just like bouncers, These
transporters can be very selective. Some transporters,
called uptake transporters, help drugs get into
cells, while others, called efflux transporters,
actually pump those drugs back out. Oh, wow.
So it's like this tug of war between these opposing
forces that determine how much of the drug ultimately
gets absorbed. That's so interesting. And the
balance between uptake and efflux can vary depending
on the drug. Absolutely. The type of transporter
involved and even individual differences in transporter
expression. Yeah, this adds another layer of
complexity to drug development. Wow. As scientists
need to consider how these transporter systems
might affect a drug's absorption. Sounds like
understanding these transporters is crucial for
predicting drug interactions as well. Absolutely.
Some drugs can compete for the same transporter,
potentially altering each other's absorption.
A classic example is grapefruit juice, which
inhibits a particular transporter involved in
the metabolism of many drugs. So if you drink
grapefruit juice while taking certain medications,
it can actually lead to higher drug levels in
your bloodstream, potentially causing those unexpected
side effects. Wow. I had no idea that grapefruit
juice could have such a significant impact. It's
a great example of how seemingly unrelated factors
can influence drug absorption through these complex
transporter systems. And as we learn more about
transporters, we're realizing that individual
variations in transporter expression can also
influence how people respond to medications.
That's fascinating. It really points to the personalized
nature of medicine. Yeah. how different people
can react to the same drug in different ways.
Precisely. And this understanding is pushing
us towards more tailored treatment approaches,
where we take into account an individual's unique
genetic makeup and how that might affect their
response to medications. It's incredible to think
about how far we've come in understanding the
intricate processes involved in drug absorption,
from dissolving sugar cubes to tiny molecular
bouncers. It's been quite a journey so far. It
really is mind -blowing when you think about
all of those factors at play, even before a drug
reaches its target in the body. Like a whole
cascade of events has to happen just right. It's
a long journey. It really is. Our sources delved
into a specific equation that scientists used
to model this process, and it's called the Noise
Whitney equation. Yes. Sounds pretty technical.
It is. But I'm curious to hear more about it.
Yeah, it is a bit technical, but it's a fascinating
equation because it helps us understand the factors
that influence how quickly a drug dissolves.
OK. It takes into account things like the drug's
solubility, the surface area of the drug particles,
and the diffusion rate of those dissolved molecules.
So essentially, it's quantifying that process
of a drug particle breaking down and spreading
out into the surrounding liquid. Exactly. And
the beauty of this equation is that it allows
formulation scientists to predict how changes
in those factors might affect the dissolution
rate. OK. So for instance, if you reduce the
particle size of a drug, you increase its surface
area, which generally leads to faster dissolution.
It's like having a mathematical blueprint for
optimizing drug dissolution. That's a great way
to put it. And this understanding is so important
for designing effective dosage forms. If a drug
dissolves too slowly, it might not be absorbed
efficiently, meaning the patient won't get the
full therapeutic benefit. Right. But if it dissolves
too quickly, it could lead to a rapid spike in
blood levels, which could cause some unwanted
side effects. So it's all about finding that
sweet spot, that Goldilocks zone. Yes. Where
the drug dissolves at just the right rate for
that optimal absorption. Exactly. And the Noyes
-Whitney equation gives those formulation scientists
a really powerful tool to help them achieve that
balance. It's a beautiful example of how mathematical
models can be used to understand and manipulate
complex biological processes. We've covered a
lot of ground in this deep dive. We have. From
the collaborative nature of drug development
to the intricate science behind drug absorption,
it's been an incredible journey. It really highlights
the remarkable achievements of team science,
doesn't it? The development of new medicines
is a testament to human ingenuity and collaboration.
Absolutely. It's clear that this team -based
approach extends far beyond just the pharmaceutical
industry. Oh, for sure. Whether it's tackling
climate change, developing new technologies,
exploring the frontiers of space, the principles
of team science collaboration, communication,
integration of diverse perspectives, they're
essential for solving those complex challenges
and driving innovation. Couldn't agree more.
And it's fascinating to think about how these
principles could be applied in other fields.
Imagine the possibilities if we could embrace
this collaborative spirit in every aspect of
our lives. That's a wonderful thought to leave
our listeners with. As we wrap up this deep dive
into the world of team science and drug development,
we encourage you to consider what other areas
could benefit from a more collaborative approach.
and what unique challenges and rewards might
arise from working together in those new frontiers.
Keep exploring, keep asking questions, and keep
diving deep.