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Biology subjects

Cammarata, G.

Publications and source records attributed to Cammarata, G..

2 recordsLinked to original sources

Citrus IntegroPectin bioconjugates induce apoptosis, decrease proliferation, reduce reactive oxygen species, alleviate mitochondrial oxidative stress, upregulate miR-146 expression and downregulate expression of Interleukin-8 in lung cancer cells

Tested on adenocarcinoma A549 cell line, IntegroPectin bioconjugates derived from the industrial processing waste of different organically grown Citrus fruits exert a pleiotropic activity in their anticancer mechanism by targeting different molecular pathways. This study shows that these novel bioconjugates induce apoptosis, decrease short-term proliferation response, reduce reactive oxygen species, alleviate mitochondrial oxidative stress, upregulate miR-146 expression and downregulate expression of Interleukin-8. Given the health beneficial properties of both citrus pectin and citrus flavonoids, and the frequency of lung cancer, said findings support urgent investigation of these new flavonoid-pectin conjugates in preclinical and clinical cancer treatment trials.

biochemistry↗

Abelson-induced phosphorylation of TACC3 modulates its interaction with microtubules and affects its impact on axon outgrowth and guidance

Axon guidance is a critical process in forming the connections between a neuron and its target. The growth cone steers the growing axon towards the appropriate direction by integrating extracellular guidance cues and initiating intracellular signal transduction pathways downstream of these cues. The growth cone generates these responses by remodeling its cytoskeletal components. Regulation of microtubule dynamics within the growth cone is important for making guidance decisions. TACC3, as a microtubule plus-end binding protein, modulates microtubule dynamics during axon outgrowth and guidance. We have previously shown that embryos depleted of TACC3 displayed spinal cord axon guidance defects, while TACC3-overexpressing spinal neurons showed increased resistance to Slit2-induced growth cone collapse. Here, in order to investigate the mechanism behind TACC3-mediated axon guidance, we studied the importance of tyrosine phosphorylation induced by Abelson tyrosine kinase. We find that the phosphorylatable tyrosines within the TACC domain are important for the microtubule plus-end tracking behavior of TACC3. Moreover, TACC domain phosphorylation impacts axon outgrowth and guidance, and it also regulates microtubule extension into the growth cone periphery. Together, our results suggest that phosphorylation of TACC3 is a key regulatory mechanism by which TACC3 controls axon outgrowth and pathfinding decisions of neurons during embryonic development.

cell biology↗