Aiman 's Not-So-Secret Blog

MicroRNAs (miRNAs) are like the secret agents of the cell. These tiny 22-nucleotide RNA molecules don’t produce proteins or engage in any flashy activities—they simply manage who gets to do what behind the scenes. In 2024, Gary Ruvkun finally received the recognition he deserved, winning the Nobel Prize for his contributions to understanding these little genetic overseers. About time, right?   So, what exactly do miRNAs do? They thrive on drama. Take telomerase, for instance—this enzyme is crucial for maintaining your telomeres (the protective DNA caps at the ends of your chromosomes). Telomeres are like the plastic tips on shoelaces: when they wear down, it’s game over for your cells. They protect important genetic information. MicroRNAs can choose to either support telomerase in keeping cells youthful or allow those caps to deteriorate. Sounds great, except sometimes they get too generous—like when they enable cancer cells to use telomerase to achieve immortality. Thanks a ...

Growing up in Bangladesh, I faced heat that was simply unbearable—temperatures that made you sweat just by blinking. However, moving to the USA showed me that the cold can be just as harsh, if not worse. I genuinely thought I was ready for winter, but no amount of preparation could brace me for those biting winds and snowstorms. That's when I understood how significantly weather influences my mood. The relentless heat of Bangladesh, for example, left me feeling sluggish and irritable. It turns me into a lethargic mess, almost like a puddle of sweat on the floor. Conversely, when winter arrives in the United States, I experience a different kind of lethargy; the cold completely drains my energy. And it’s not just me. Cold and dark weather can lead to a drop in serotonin levels in the brain, making people more vulnerable to feelings of depression or anxiety. Then there's Seasonal Affective Disorder (SAD), which is a genuine concern. The absence of sunlight during winter can disru...