Tight junctions
نویسندگان
چکیده
part of my lab in that direction with work on human embryonic stem cells which, as we have come to learn, show aberrant epigenetic regulation. There is a lot to learn from this much needed human model. What do you enjoy most about science? The challenge, the discovery, and the people. In this profession, one meets some of the brightest (and most eccentric) minds on Earth. Although I dislike airports and flying, I do enjoy the chance to see different cultures, experience science as it is done in other countries, and taste great food (I always enjoy myself once I am there). Through science, one has the chance to make a lasting positive contribution to our society and planet. Are there any disappointments in science? For me, one of the biggest attractions to science is that it is inherently value-free. There is one truth that cannot be changed by culture, history, and politics. But I no longer think that science is devoid of politics. Science itself is objective, but the practice of it is about people, personalities, and perceptions of what is important. We see this in the way grants are awarded, papers published, and policies established by the government. I see great ideas that are not given a chance at being tested because of diminishing resources; or great ideas not finding an appropriate place in the literature because of a general unwillingness to take risks on very imaginative thinking. Perhaps there is no way around this, especially with the current crisis in grant funding. Both junior and seasoned investigators spend a lot of time writing grants to keep their laboratories alive when their time would be more productively spent on experiments. Any career advice for someone just starting their own lab? Stay at the bench for as long as possible, because it is more rewarding to do experiments than to exercise your administrative skills in the office. Nowadays, I am more coach, cheerleader, and psychologist than experimentalist — sadly. The people you hire are your greatest assets — choose and treat them well. Hire people with complementary skills and always try to keep a balance of talent and personalities in the lab. Over the years, I have come to value talent, work ethic, honesty, and collaborative spirit equally. Are there gender differences in science? As someone who makes a living out of studying male and female differences, you might …
منابع مشابه
Morphological changes in tight junctions of Necturus maculosus proximal tubules undergoing saline diuresis
Tight junctions between epithelial cells are believed to control the paracellular diffusion of substances across epithelia. Epithelia in which tight junctions are poorly developed display a higher paracellular electrical conductance, while those with extensive tight junctions show lower conductance values. We described here a particular epithelium, that of the proximal tubules of the Necturus k...
متن کاملVariations in Tight and Gap Junctions in Mammalian Tissues
The fine structure and distribution of tight (zonula occludens) and gap junctions in epithelia of the rat pancreas, liver, adrenal cortex, epididymis, and duodenum, and in smooth muscle were examined in paraformaldehyde-glutaraldehyde-fixed, tracer-permeated (K-pyroantimonate and lanthanum), and freeze-fractured tissue preparations. While many pentalaminar and septilaminar foci seen in thin-sec...
متن کاملارتباط بیان ژن اوکلودین با مشخصات بالینی و مورفولوژیک سرطان پستان
Background: Breast cancer is the second most common cancer in the world after lung cancer also is the fifth cause of cancer mortality. About 90 percent of cancer mortality is because of metastasis and devastating between cell attachments, especially tight cell junctions. Epithelial mesenchymal transition is a phenomena involved in metastasis and starts with cell detachment. Occludin is the inte...
متن کاملNa-K-ATPase regulates tight junction permeability through occludin phosphorylation in pancreatic epithelial cells.
Tight junctions are crucial for maintaining the polarity and vectorial transport functions of epithelial cells. We and others have shown that Na-K-ATPase plays a key role in the organization and permeability of tight junctions in mammalian cells and analogous septate junctions in Drosophila. However, the mechanism by which Na-K-ATPase modulates tight junctions is not known. In this study, using...
متن کاملDifferential pathways of claudin oligomerization and integration into tight junctions
Tight junctions are the critical intercellular structure required to establish an epithelial barrier. Among the several classes of proteins required to form tight junctions are the tetraspan transmembrane proteins known as claudins that directly determine paracellular permeability. Considerable progress has been made in understanding how incorporation of different claudins into tight junctions ...
متن کاملPermeability of Sertoli Cell Tight Junctions to Lanthanum after Ligation of Ductus Deferens and Ductuli Efferentes
The permeability of Sertoli cell tight junctions to lanthanum administered during fixation has been compared in rats after ligation of the ductus deferens and after ligation of the ductuli efferentes. In both control and vasoligated testes, lanthanum penetrated only short distances into the Sertoli cell tight junctions before stopping abruptly. The tight junction, consisting of numerous pentala...
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عنوان ژورنال:
- Current Biology
دوره 18 شماره
صفحات -
تاریخ انتشار 2008